Housing assembly for waste disposal unit



Jan. 13, 1959 I E. E. WIEC ZOREK 2,868,465

HOUSING ASSEMBLY FOR WASTE DISPOSAL UNIT Filed Feb. 1'7, 1955 2 Sheets-Sheet 1 1 INVEN TOR.

fl/6/V a. W/[CZOKfK an! IIIIIIIIII"IIIIIIIIIA 7 0 v/g'al 72 ATTOR/VAYS Jan. 13, 1959 E. E. WIECZOREK 2,868,465

HOUSING ASSEMBLY FOR WASTE DISPOSAL UNIT Filed Feb. 17, 1955 2 Sheets-Sheet 2 ATTOR/VfYS Unite' States Patent.

HOUSING ASSEMBLY non WASTE DISPOSAL UNIT Eugene E. Wieczorek, Racine, Wis., assignor to In-Sink- Erator Manufacturing Company, Racine, Wis., a corporation of Wisconsin 3 Application February 17, 1955, Serial No. 488,749

3 Claims. (Cl. 241285) This invention relates to a waste disposal unit and in particular to a housing assembly construct1on for said unit. Waste disposal units of the typethat are slnk mounted usually consist of a top suspension assembly, a comminutassembly construction between the top motor end bell housing and the comminuting chamber housing such that the device may be readily assembled, will provide a good seal and will be vibration-proof in operation.

It is a further object to provide an assembly which in addition to the above features also maintains the comminuting ring in position and co-operates with a tail pipe housing so that it cannot be dis-assembled while the tail pipe is still connected.

Other objects and features of the invention will be apparent in the following description and claims.

Drawings accompany the invention, and the various views thereof may be briefly described as:

Figure l, a vertical section through the assembly showing the relationship of the parts.

Figure 2, a side elevation of the motor upper end bell housing,

Figure 3, a partial sectional view on line 3-3 of Figure 1.

Figure 4, a plan view of the motor upper end bell hous- Figure 5, a bottom view of the comminuting chamber housing.

Figure 6, a partial elevation of the motor end bell at line 6 of Figure 4.

Figure 7, a sectional view on line 7-7 of Figure 1.

Figure 8, a partial view illustrating the manner in which a screw driver may be used to tighten the parts.

ice

.a depending annular ridge or head 40 which. provides a definite line contact with the rubber to hold the ring 36 vice 4243 between the housing 16 and the comminuting ring 14 to prevent rotation of the ring which might occur if the device becomes jammed. Also, it is best to treat the rubber ring with a graphite material to prevent sticking after prolonged use. The means for compressing Referring to the drawings, the device in assembly comprises a feed or comminuting chamber housing 10 which has an outward flaring portion 12 housing a comminuting ring 14. Below these parts is the top end bell 16 of an actuating motor, the windings of which are shown at 18. The motor drives a shaft 20 which is sealed at 22 and 24 around a bushing 26. At the top of the shaft 20 is a comminuting rotor 30 held on by a nut 32.

It will be noted that the comminuting ring 14 is recessed in an annular open-topped groove 34 at the top of the end bell. A sealing material is usually applied to this recess prior to assembly to assist in the seal at this junction of the parts. At the top of the comminuting ring a neoprene sealing ring 36 presses down against the ring by reason of the pressure of a shelf portion 38 at the beginning of the flare 12 of housing 19. This portion has the rubber ring 36 include a locking device between a flange 44 and the upper edge of the end bell.

Referring to Figures 2 and 4, it will be noted that at the top of the end bell there are three bayonet projections 46 having a. tapered portion 48 and a ledge. portion 50 and a stop lug 51. The outlet of the'end bell is shown at a flange mount projection 52 having a discharge opening 54. A raised island portion 55 in the interior of the end bell has a radial fin 56 which projects toward the center of said port or opening 54.

Directly adjacent and extending to the right of this outlet construction are vertical grooves 60 formed into the wall of the end bell between the bayonet projections 56. The entire end bell is recessed at 62 near the top edge. g

Referring now to the bottom of the comminuting housing 12, a cylindrical flange portion 44 has inwardly projecting, circumferentially extending lugs 66 designed to =co-operate with the bayonet portions 46 of the end bell.

In assembly these parts are related as shown in Figure 7.

Between the lugs 66 of Figure 5, which will be post'- tioned adjacent the outlet opening of the end bell, is a notch 70 Which has a double function. As shown in Figure 8, the edges of thi notch may be used as a fulcrum for a screw driver 72 which enters one of the notches 60 to tighten the top housing 10 on the motor end bell. These notches 66 and 70 may be also used to loosen the assembly.

When the housings are brought to final position, as shown in Figure 3, a coupling flange 74 which holds aflanged drain pipe 76 is clamped onto the housing projection 52 by screws 78. This flange 74 has an inwardly extending lug 80 which enters the opening 7 (l to lock the top housing in place as long as the tail pipe or drain pipe is in position. To create a decorative effect in this assembly between the housings, a small diameter brass ring 82 is positioned between the housings as shown especially in Figure 1. This ring merely takes up the clearance between the part 44 and the bottom ledge of the recess 62.

It will thus be seen that even when the housing 10 is permanently affixed to a sink it is possible to remove readily the motor unit of the device for purposes of clearing it if it has become accidentially jammed or for the purpose of removing the motor for repair or for disassembling the device to replace a rotor or a cutting ring. Without the need of special tools, this assembly and disassembly can take place. The device further serves to lock in the ring 14 and to seal the top of the ring 14 to the housing 10.

I claim:

1. In a waste disposal unit of the type having a comminuting chamber and a supported electric motor thereon, a combination assembly construction between the bottom of the comminuting chamber and the upper end bell of the mot0r,which comprises, an upper end bell for said motor having a recess for a comminuting rotor and an annular chamber terminating at one portion of said end bell in a radial outlet passage, a comminuting chamber having a bottom portion of substantially the same diameter as the end bell, co-operating bayonet lugs .andslots, and said comminuting chamber and said end bell whereby relative rotation of said parts causes locking thereof, radial surfaces on the inside of said end bell and said chamber, a comminuting ring disposed between said surfaces, a sealing, compressible ring interposed between said comminutingring and one of said radial surfaces having pre-assembly dimensions greater than the assembly clearance between said surfaces, and means to facilitate ;lie radially outward of said notches whereby a prying bar, such as a screw driver, may be inserted through said aperture and fulcrumed in. said several notches to effect relativerotation between said chamber and said vend bell, an outletpipe connectedto said radial outlet passage of said end bell, and a coupling flange fastened to said end ,bell to seal said pipe to said end "bell, said coupling flange having a lug to enter said aperture in 'said comminuting chamber in the locked position only, wherein said chamber cannot be dis-assembled until said coupling flange is removed.

2. In a waste disposal unit of the type having a receiving chamber and a motor housing, means for providing an outlet in the top of said motor housing for comminuted waste material, means on said chamber and means on said housing co-operable to join said 'members upon relative rotation thereof, resilient means resisting said relative rotation, a mechanism for facilitating said rotation comprising a notch formed in said chamher and a plurality of notches formed on said housing wherein a lever may be fulcrumed, and a shredding ring interposed axially between said motor housing and said chamber, said resilient means serving as a seal between said shredding ring and said chamber, said cooperable means serving also to create relative axial movement between said housing and said chamber to compress said resilient means as the parts are relatively rotated.

3. In a waste disposal unit of the type having a receiving chamber and a motor housing, means for providing an outlet in the top of said motor housing for comminuted waste material,-means on said chamber and means on said housing cooperable to join said members upon relative rotation thereof, resilient means resisting said relative rotation, a mechanism for facilitating said rotation comprising a notch formed in said chamber and a plurality of notches formed on said housing wherein a lever may be fulcrumed, a drain outlet pipe and a coupling unit fastening said pipe in sealed relation to said motor housing having a radially inward extending lug received by the notch in said chamber to lock the housing in assembled position as long as said drain connection is intact.

References Cited in the file of this patent UNITED STATES PATENTS 1,097,508 Bailey May 19, 1914 1,257,785 Benzinger Feb. 26,1918

1,307,273 Salley June 17, 1919 2,566,069 Powers Aug. 28, 1951 FOREIGN PATENTS 458,732 Great Britain Dec. 24, 1936 

